Displacement = [ ...
1  0.000000000E+00  0.000000000E+00 -0.328796113E+00
5  0.130104974E+01  0.000000000E+00 -0.328796113E+00
6  0.130104974E+01  0.000000000E+00  0.000000000E+00
2  0.000000000E+00  0.000000000E+00  0.000000000E+00
3  0.000000000E+00 -0.328796113E+00  0.000000000E+00
7  0.130104974E+01 -0.328796113E+00  0.000000000E+00
8  0.130104974E+01 -0.328796113E+00 -0.328796113E+00
4  0.000000000E+00 -0.328796113E+00 -0.328796113E+00];

Displacement = sortrows(Displacement);

U - Displacement(:,2:end)
